Originally Posted by pochi

A big no for TPE. TPE always refused to free same-day flight change unless it's overbooked or weather condition (post-COVID).
Post-COVID, CX tends to hold up all rights from checkin desk @ TPE. I encountered dozen times that if you asked for SDC, they have to callback, check all the fare-rules and tell you you've to pay. (not mad because I am on business essential).

Last time I did CX451 TPE-HKG sector and there's a delay for more than 1 hour, I asked for if I can switch to 565/473 (both widely open on J, and more than an hour before departure of 473), they called and said I have to pay for changing fee.

disclaimer: CX DM & no connection flight.